使用GDB与VS Code远程调试时共享库断点无法绑定

环境配置 #

• 开发环境：Ubuntu系统笔记本电脑 + VS Code
• 目标设备：树莓派（Raspberry Pi）
• 调试器：树莓派运行gdbserver，笔记本使用GDB Multiarch
• 项目结构：
  • 主可执行文件：${workspaceRoot}/build/rpi/usr/bin/my-executable
  • 共享库路径：${workspaceRoot}/build-output/lib

调试配置 #

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "cppdbg",
            "request": "launch",
            "name": "Attach to gdbserver",
            "program": "${workspaceRoot}/build/rpi/usr/bin/my-executable",
            "miDebuggerServerAddress": "192.168.1.100:1234",
            "cwd": "${workspaceRoot}",
            "miDebuggerPath": "/usr/bin/gdb-multiarch",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description": "Load shared library symbols",
                    "text": "set solib-search-path /home/user/projects/my-project/lib"
                }
            ],
            "externalConsole": true,
            "MIMode": "gdb",
            "additionalSOLibSearchPath": "${workspaceRoot}/build-output/lib",
            "miDebuggerArgs": "${workspaceRoot}/build-output/lib",
            "logging": {
                "engineLogging": true,
                "trace": true,
                "traceResponse": true
            }
        }
    ]
}

问题详情 #

已通过-g参数编译共享库生成调试符号，且设置了solib-search-path，但共享库中的断点仍无法绑定。主可执行文件内的断点可正常工作，共享库内的断点直接被忽略。

已采取的排查步骤 #

• 确认所有共享库均使用-g参数编译，包含完整调试符号
• 在setupCommands中添加set solib-search-path /home/user/projects/my-project/lib配置符号搜索路径
• 设置additionalSOLibSearchPath为${workspaceRoot}/build-output/lib
• 在miDebuggerArgs中添加共享库路径参数

内容的提问来源于stack exchange，提问作者Elias Nowak